Download Event Information
Origin
PublicID |
2016p858000 |
UTC Time |
2016-11-13T11:02:56Z |
Latitude |
-42.69 (± 2.3
km)
|
Longitude |
173.02 (± 3.4
km)
|
Depth |
15 km (± 4 km) |
Depth Type |
free |
Earth Model |
iasp91 |
Used Phase Count |
94 |
Used Station Count |
93 |
Standard Error |
1.82 (s) |
Azimuthal Gap |
54.99 (degrees) |
Minimum Distance |
0.22 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (Mw(mB)) |
7.8 (± 0.4) |
|
MLv |
7.4 (± 0.2) |
58 |
ML |
7.8 (± 0.3) |
57 |
mB |
7.7 (± 0.2) |
18 |
Mw(mB) |
7.8 (± 0.4) |
37 |
M |
7.8 |
58 |
GeoNet combines magnitudes into a summary magnitude, M, which consists of a weighted average of the individual magnitudes and attempts to be a best possible compromise between all magnitudes for a range of earthquake sizes.
Summary magnitude for GeoNet is then defined as:
M = (2 * MLv + (0.4 * number_of stations(Mw(mB)) - 1) * Mw(mB)) / (2 + (0.4 * number_of_stations(Mw(mB)) - 1))
Where MLv is local magnitude calculated on the vertical component and Mw(mB) is a Mw estimation based of mB by Bormann and Saul (2008).